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arduino:control_structures:return [2013/02/15 20:45] (current)
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 +====== return   ======
 +
 +Terminate a function and return a value from a function to the calling function, if desired.
 +
 +==== Syntax:   ====
 +
 +return;
 +
 +return value;    // both forms are valid
 +
 +==== Parameters   ====
 +
 +value: any variable or constant type
 +
 +==== Examples:   ====
 +
 +A function to compare a sensor input to a threshold
 +<code arduino> int checkSensor(){       
 +    if (analogRead(0) > 400) {
 +        return 1;
 +    else{
 +        return 0;
 +    }
 +}</code>
 +
 +The return keyword is handy to test a section of code without having to "comment out" large sections of possibly buggy code.
 +
 +<code arduino>void loop(){
 +
 +// brilliant code idea to test here
 +
 +return;
 +
 +// the rest of a dysfunctional sketch here
 +// this code will never be executed
 +}</code>
 +
 +
 +==== See also   ====
 +
 +[[Comments | comments ]]
 +
 +
 +Source: arduino.cc
  
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arduino/control_structures/return.txt · Last modified: 2013/02/15 20:45 (external edit)

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